Remove unneded file crop/croptypes.jl

src/Persefone.jl

@@ -141,7 +141,6 @@ include("analysis/makieplots.jl")
 include("world/landscape.jl")
 include("world/weather.jl")
 
-include("crop/croptypes.jl")
 include("crop/farmplot.jl")
 include("crop/almass.jl")
 include("crop/simplecrop.jl")

src/crop/croptypes.jl

-### Persefone.jl - a model of agricultural landscapes and ecosystems in Europe.
-###
-### This file contains abstract types that crop models must derive from.
-###
-
-# abstract type AbstractCropType end
-
-# abstract type AbstractCropState end